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ChartKit vs Thumbnailr

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ChartKit compared with Thumbnailr
DetailChartKit logo ChartKitThumbnailr logo Thumbnailr
What it doesThink-cell-style charts and AI for Google Workspace Free YouTube thumbnail maker that runs in your browser, no sign-up or install required
StageNot given Not given
FoundedNot given Not given
Based inDK Not given
Pricing modelFreemium Freemium
PricingFree: €0, 10 charts per month. Pro: €10/month (billed monthly) or €80/year. Enterprise: custom pricing per seat. Free mode: £0/forever with full editor, 10 templates, Thumbnail Check, feed test, series mode (3 per batch), 1280×720 PNG & JPG export, no watermark. Pro mode: £4.99/month or £39.99/year (about £3.33/month), includes 16 premium templates, brand kit, unlimited series (up to 200 per ZIP), one-click ba
Key features
  • Waterfall, Mekko, Gantt, and other advanced chart types
  • Charts linked to Google Sheets that auto-update
  • AI Chat and writing pill using your own Claude or ChatGPT
  • Claude connector to insert charts from claude.ai
  • Deck checks for off-brand colors, wrong fonts, and conflicting numbers
  • Chart annotations including Delta, CAGR, level line, and axis break
  • Team palette and shared layouts for brand consistency
  • Slide library with approved slides searchable across team
  • Desktop app for Mac and Windows to build charts and export as PNG
  • Align, arrange, and distribute tools for slide layout
  • 10 free templates including 5 gaming layouts
  • Bold outlined text and face cut-outs
  • Thumbnail Check design checklist
  • Feed test preview in mock social feed
  • 1280×720 PNG and JPG export with no watermark
  • YouTube video link import
  • Works on desktop and mobile browsers
  • Pro: one-click background removal on device
  • Pro: 4K export and brand kit with saved colors and fonts
What makes it different
  • Think-cell-style charts in Google Slides—the only tool to bring advanced charting to Slides
  • Runs on your own Claude or ChatGPT, adding no model bill
  • Colleagues see charts without needing ChartKit installed
  • Numbers on slides stay linked to Sheets and refresh automatically
  • Data is never trained on; only decks you open are accessed
  • No sign-up or installation required, works directly in browser
  • All images and projects stay private on your device, never uploaded
  • Completely free with no watermark and no time limits
  • 13 original gaming layouts with dedicated gaming pack
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)30
Citation Flow (Majestic)100
Referring domains (Majestic)30

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